AI-generated tattoo project concept of an ornate hourglass skull design in black and grey, sketched on a parchment-like sheet. The central hourglass is supported by four carved columns with baroque detailing; a skull crowns the top and a second skull peeks from the foreground. Inside the glass the sand pools into a dune that symbolizes time slipping away, while wisps of smoke curl around the base to suggest impermanence. The parchment background carries subtle ornamental filigree that frames the scene, giving it the look of vintage flash ready for skin. The imagery fuses mortality with architectural elegance, a memento mori motif rendered in bold black and grey shading to maximize contrast and longevity on flesh. From a technique perspective, the concept relies on strong outlines, smooth gradient shading, and restrained texture to render the skull, sand, and smoke with depth and realism. The composition scales well to larger canvases such as sleeves or back pieces, yet can be adapted to a smaller forearm piece if simplified. As a cover-up option, the dense shadows and central motif offer excellent masking of older ink, making this an ideal choice for clients seeking cover-up tattoos. For those pursuing meaningful tattoos, tattoo design, and custom tattoo design ideas, this AI-generated project blends gothic symbolism with graphic pattern elements, aligning with black and grey realism, body art, and ink culture. It demonstrates how time and mortality can inspire a striking, timeless image.